<?php
$n = @empty($_GET['n']) ? 0 : $_GET['n'];
$s = @empty($_GET['s']) ? 10 : $_GET['s'];
$temp = "测试！";
if( $n>0 ){
    for( $i=0; $i<$n; $i++ ){
	  for( $j=0; $j<=$i; $j++ ){
	      @$content .= $temp;
	  }
	      @$content .= "<br/>";
	}
}
$str = '{"user":"环球网访客","addtime":"'.time().'","content":"'.$content.'","num":"'.($n).'"}';
header("Content-Type: text/html;charset=utf-8");
echo $str;